PCWorld: Google says that it has made an important change to its search algorithms that will move content farms and other low-quality sites lower in the search results. "We believe it's a big step in the right direction of helping people find ever higher quality in our results," blogged Google's Amit Singhal and Matt Cutts. "We've been tackling these issues for more than a year, and working on this specific change for the past few months. And we're working on many more updates that we believe will substantially improve the quality of the pages in our results."
For now, the change only affects U.S. users. Google says it will impact 11.8 percent of searches.